Water Quality Products – pH / ORP Controllers

PHC-402 Dual Relay Digital pH Controller with Temperature Compensation UP and DOWN Adjustable Dosing for Aquarium, Hydroponics System and Indoor Plant Grow

PHC-342 Digital PH / ORP Controller with Monitoring and Dosing in Water Digital pH Meter Redox Temp Tester App Remote Online Monitor for Swimming Pool Aquaculture Fishpond

PH-303 2-in-1 Digital pH & ORP Controller + Electrodes Industrial Type

PHC-244 2 in 1 Digital pH & ORP Redox Controller with Separate Relays Replaceable Electrode BNC Type Probe Water Quality Monitor Tester for Aquarium Hydroponics Tank 14.00pH / 1999mV with Calibration Solution

PH-803 Digital pH ORP Redox 2 in 1 Controller Monitor w/ Output Power Relay Control, Electrode Probe BNC, Water Quality Meter Online Continuous Measurement Kit, for Aquarium Hydroponics Plant Pool Spa

PH-301 DIGITAL PH CONTROLLER + BNC ELECTRODE 220V or 110V CO2

PH-203 Digital 2-in-1 pH ORP mV CO2 Controller Meter 0.00~14.00PH Range

PH-201 Digital pH Controller + Electrode + Solutions 110V or 220V